xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Paul Menzel]

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Dear DRI folks,


using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
Closing Evolution the usage goes back to more or less 0 %.

I am contacting this list because of the output of OProfile. After
figuring out what is the culprit I would submit the appropriate bug
report.

        $ opcontrol --version
        opcontrol: oprofile 0.9.6 compiled on Jul 11 2011 15:32:06
        $ sudo opcontrol --separate=lib,kernel
        $ sudo opcontrol --start-daemon
        $ opreport
        CPU: AMD64 processors, speed 1000 MHz (estimated)
        Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of 0x00 (No unit mask) count 100000
        CPU_CLK_UNHALT...|
          samples|      %|
        ------------------
           200635 24.9294 Xorg
        	CPU_CLK_UNHALT...|
        	  samples|      %|
        	------------------
        	   102707 51.1910 no-vmlinux
        	    20261 10.0984 radeon_drv.so
        	    19241  9.5901 Xorg
        	    15254  7.6029 libdrm_radeon.so.1.0.0
        	    13290  6.6240 libpixman-1.so.0.26.0
        	    12887  6.4231 libc-2.13.so
        	    11086  5.5255 libexa.so
        	     2299  1.1459 libfb.so
        	     1409  0.7023 libdrm.so.2.4.0
        	      717  0.3574 [vdso] (tgid:2764 range:0xb7586000-0xb7587000)
        	      645  0.3215 libextmod.so
        	      505  0.2517 librt-2.13.so
        	      151  0.0753 libpthread-2.13.so
        	      145  0.0723 evdev_drv.so
        	       37  0.0184 libudev.so.0.13.0
        	        1 5.0e-04 ld-2.13.so
           127271 15.8137 perl
        	CPU_CLK_UNHALT...|
        	  samples|      %|
        	------------------
        	    84842 66.6625 perl
        	    21993 17.2804 libc-2.13.so
        	    17668 13.8822 no-vmlinux
        	     1858  1.4599 ld-2.13.so
        	      413  0.3245 libsqlite3.so.0.8.6
        	      268  0.2106 libpthread-2.13.so
        	       70  0.0550 DBI.so
        	       25  0.0196 libm-2.13.so
        	       23  0.0181 libdl-2.13.so
        	       20  0.0157 POSIX.so
        	       14  0.0110 Socket.so
        	       14  0.0110 SQLite.so
        	       13  0.0102 libnss_compat-2.13.so
        	       11  0.0086 Syslog.so
        	        9  0.0071 Fcntl.so
        	        6  0.0047 Cwd.so
        	        5  0.0039 libcrypt-2.13.so
        	        5  0.0039 libnsl-2.13.so
        	        4  0.0031 libnss_nis-2.13.so
        	        3  0.0024 [vdso] (tgid:3287 range:0xb77de000-0xb77df000)
        	        3  0.0024 Util.so
        	        1 7.9e-04 [vdso] (tgid:7099 range:0xb773c000-0xb773d000)
        	        1 7.9e-04 [vdso] (tgid:7186 range:0xb76e4000-0xb76e5000)
        	        1 7.9e-04 [vdso] (tgid:7270 range:0xb7792000-0xb7793000)
        	        1 7.9e-04 libnss_files-2.13.so
           118502 14.7241 evolution
        	CPU_CLK_UNHALT...|
        	  samples|      %|
        	------------------
        	    32194 27.1675 libcairo.so.2.11200.2
        	    24613 20.7701 libglib-2.0.so.0.3200.3
        	    14060 11.8648 libgtk-3.so.0.400.2
        	    11814  9.9695 libgobject-2.0.so.0.3200.3
        	     8400  7.0885 libc-2.13.so
        	     7502  6.3307 libpthread-2.13.so
        	     7387  6.2337 no-vmlinux
        	     3161  2.6675 libgdk-3.so.0.400.2
        	     2108  1.7789 libpango-1.0.so.0.3000.0
        	     1632  1.3772 libpixman-1.so.0.26.0
        	     1133  0.9561 libX11.so.6.3.0
        	      853  0.7198 libXrender.so.1.3.0
        	      821  0.6928 libdbus-1.so.3.7.2
        	      582  0.4911 libm-2.13.so
        	      499  0.4211 libxcb.so.1.1.0
        	      451  0.3806 libpangocairo-1.0.so.0.3000.0
        	      395  0.3333 libcogl.so.9.1.1
        	      261  0.2202 libcamel-1.2.so.33.0.0
        	      169  0.1426 librt-2.13.so
        	       82  0.0692 [vdso] (tgid:5438 range:0xb771c000-0xb771d000)
        	       77  0.0650 libgio-2.0.so.0.3200.3
        	       65  0.0549 libgnome-keyring.so.0.2.0
        	       62  0.0523 libgvfscommon.so
        	       55  0.0464 libpangoft2-1.0.so.0.3000.0
        	       36  0.0304 libfreetype.so.6.8.1
        	       33  0.0278 libdbus-glib-1.so.2.2.2
        	       10  0.0084 libsqlite3.so.0.8.6
        	        8  0.0068 pango-basic-fc.so
        	        7  0.0059 libeutil.so.0.0.0
        	        6  0.0051 libcamellocal.so
        	        5  0.0042 libfontconfig.so.1.5.0
        	        4  0.0034 libgdk_pixbuf-2.0.so.0.2600.1
        	        3  0.0025 libcamelimap.so
        	        3  0.0025 libemail-engine.so.0.0.0
        	        2  0.0017 libemiscwidgets.so.0.0.0
        	        2  0.0017 libeshell.so.0.0.0
        	        2  0.0017 libevolution-mail.so.0.0.0
        	        1 8.4e-04 libcamelsmtp.so
        	        1 8.4e-04 libevolution-utils.so.0.0.0
        	        1 8.4e-04 libatk-1.0.so.0.20409.1
        	        1 8.4e-04 libnspr4.so
        	        1 8.4e-04 libedataserver-1.2.so.16.0.0
           100885 12.5352 pulseaudio
        	CPU_CLK_UNHALT...|
        	  samples|      %|
        	------------------
        	    43817 43.4326 no-vmlinux
        	    16451 16.3067 libpulsecommon-2.0.so
        	    12801 12.6887 libspeexdsp.so.1.5.0
        	    11348 11.2485 libpulsecore-2.0.so
        	     3897  3.8628 libpulse.so.0.14.2
        	     3080  3.0530 libc-2.13.so
        	     2844  2.8191 libasound.so.2.0.0
        	     2000  1.9825 libpthread-2.13.so
        	     1622  1.6078 libprotocol-native.so
        	     1563  1.5493 libalsa-util.so
        	      602  0.5967 ld-2.13.so
        	      542  0.5372 [vdso] (tgid:13180 range:0xb77a6000-0xb77a7000)
        	      318  0.3152 librt-2.13.so
            82317 10.2281 no-vmlinux
            81141 10.0820 python2.7
        	CPU_CLK_UNHALT...|
        	  samples|      %|
        	------------------
        	    28004 34.5128 no-vmlinux
        	     6449  7.9479 libvorbis.so.0.4.5
        	     6322  7.7914 libgstreamer-0.10.so.0.30.0
        	     6109  7.5289 libpulsecommon-2.0.so
        	     5993  7.3859 libpthread-2.13.so
        	     4524  5.5755 libglib-2.0.so.0.3200.3
        	     4276  5.2698 libpulse.so.0.14.2
        	     3965  4.8866 libc-2.13.so
        	     3255  4.0115 libgstbase-0.10.so.0.30.0
        	     3069  3.7823 libgobject-2.0.so.0.3200.3
        	     2407  2.9664 libgstcoreelements.so
        	     1797  2.2147 libogg.so.0.8.0
        	     1765  2.1752 libgstaudio-0.10.so.0.25.0
        	      885  1.0907 libgstogg.so
        	      867  1.0685 libgstpulse.so
        	      418  0.5152 librt-2.13.so
        	      406  0.5004 [vdso] (tgid:13956 range:0xb76fa000-0xb76fb000)
        	      253  0.3118 libgstvorbis.so
        	      194  0.2391 libgstplaybin.so
        	       83  0.1023 libsoup-2.4.so.1.5.0
        	       44  0.0542 libgio-2.0.so.0.3200.3
        	       35  0.0431 libgstaudioconvert.so
        	       12  0.0148 libgstsouphttpsrc.so
        	        3  0.0037 libX11.so.6.3.0
        	        2  0.0025 libgdk-x11-2.0.so.0.2400.10
        	        2  0.0025 libgtk-x11-2.0.so.0.2400.10
        	        1  0.0012 libdbus-1.so.3.7.2
        	        1  0.0012 libpyglib-2.0-python2.7.so.0.0.0
        […]

The following packages are installed.

        libdrm2:i386                  2.4.33-3
        xserver-xorg-video-radeon     1:6.14.4-5
        linux-image-3.2.0-3-686-pae   3.2.23-1

Could somebody please tell me what component (X driver, DRM, Evolution,
Cairo, …) to investigate and how?


Thanks,

Paul

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Michel Dänzer]

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On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> 
> using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> Closing Evolution the usage goes back to more or less 0 %.

I'm not seeing this. Is there something in your Evolution window(s) that
is constantly repainting, e.g. a spinner in the status bar, a blinking
cursor, ... ?


> Could somebody please tell me what component (X driver, DRM, Evolution,
> Cairo, …) to investigate and how?

I'd focus on profiling the X server, making sure the profiles show
symbols, ideally with call graphs. sysprof or perf might work better for
this than oprofile.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Paul Menzel]

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Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> > 
> > using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> > Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> > Closing Evolution the usage goes back to more or less 0 %.
> 
> I'm not seeing this. Is there something in your Evolution window(s) that
> is constantly repainting, e.g. a spinner in the status bar, a blinking
> cursor, ... ?

Now that you are mentioning it, in the bottom there is the message
»Checking for New Messages« and next to it there is an animation where
something goes around a circle. Canceling that removes X’s CPU usage.

Thanks a lot.

Should I recommend something to the Evolution folks on how to due such
animations? Or is the only way to avoid animations?

> > Could somebody please tell me what component (X driver, DRM, Evolution,
> > Cairo, …) to investigate and how?
> 
> I'd focus on profiling the X server, making sure the profiles show
> symbols, ideally with call graphs. sysprof or perf might work better for
> this than oprofile.

Thanks. Lucky me, that this is not needed now and I can postpone how to
figure out how to start X that way under Debian with GDM.


Michael, thanks as always!

Paul

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Chris Wilson]

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On Tue, 11 Sep 2012 15:07:41 +0200, Paul Menzel <paulepanter@users.sourceforge.net> wrote:
> Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > I'd focus on profiling the X server, making sure the profiles show
> > symbols, ideally with call graphs. sysprof or perf might work better for
> > this than oprofile.
> 
> Thanks. Lucky me, that this is not needed now and I can postpone how to
> figure out how to start X that way under Debian with GDM.

For future reference, sysprof and perf can be used to perform system
wide profiling - that is you can launch them after starting the task you
need to profile. For sysprof this is its default mode, and for perf you
need 'perf record -a'

A quick 'sudo perf top' is always a useful first step. For best results,
make sure you have debugging symbols and frame pointers.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Michel Dänzer]

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On Die, 2012-09-11 at 15:07 +0200, Paul Menzel wrote: 
> Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> > > 
> > > using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> > > Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> > > Closing Evolution the usage goes back to more or less 0 %.
> > 
> > I'm not seeing this. Is there something in your Evolution window(s) that
> > is constantly repainting, e.g. a spinner in the status bar, a blinking
> > cursor, ... ?
> 
> Now that you are mentioning it, in the bottom there is the message
> »Checking for New Messages« and next to it there is an animation where
> something goes around a circle. Canceling that removes X’s CPU usage.

That's a GTK+ spinner widget, which uses RENDER trapezoids, which is a
software rendering fallback with EXA.

> Should I recommend something to the Evolution folks on how to due such
> animations? Or is the only way to avoid animations?

I don't think there's anything wrong with the animation per se. However,
one issue I've found is that Evolution schedules many actions as glib
idle callbacks with priority lower than G_PRIORITY_HIGH_IDLE + 20, which
is the priority used by GTK+ for drawing animations. This can result in
the animations delaying the completion of the actual work they're
representing.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Paul Menzel]

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Am Dienstag, den 11.09.2012, 15:24 +0200 schrieb Michel Dänzer:
> On Die, 2012-09-11 at 15:07 +0200, Paul Menzel wrote: 
> > Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > > On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> > > > 
> > > > using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> > > > Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> > > > Closing Evolution the usage goes back to more or less 0 %.
> > > 
> > > I'm not seeing this. Is there something in your Evolution window(s) that
> > > is constantly repainting, e.g. a spinner in the status bar, a blinking
> > > cursor, ... ?
> > 
> > Now that you are mentioning it, in the bottom there is the message
> > »Checking for New Messages« and next to it there is an animation where
> > something goes around a circle. Canceling that removes X’s CPU usage.
> 
> That's a GTK+ spinner widget, which uses RENDER trapezoids, which is a
> software rendering fallback with EXA.

Could that be changed to not us some fallback?

> > Should I recommend something to the Evolution folks on how to due such
> > animations? Or is the only way to avoid animations?
> 
> I don't think there's anything wrong with the animation per se. However,
> one issue I've found is that Evolution schedules many actions as glib
> idle callbacks with priority lower than G_PRIORITY_HIGH_IDLE + 20, which
> is the priority used by GTK+ for drawing animations. This can result in
> the animations delaying the completion of the actual work they're
> representing.

I reported that issue as 

        [Bug 683867] Schedule actions with priority higher than G_PRIORITY_HIGH_IDLE + 20

to the GNOME BTS [1] and Matthew Barnes replied that this should be done
in GTK+ itself.


Thanks,

Paul


[1] https://bugzilla.gnome.org/show_bug.cgi?id=683867

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Re: xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Michel Dänzer]

On Mit, 2012-09-12 at 15:29 +0200, Paul Menzel wrote:
> Am Dienstag, den 11.09.2012, 15:24 +0200 schrieb Michel Dänzer:
> > On Die, 2012-09-11 at 15:07 +0200, Paul Menzel wrote: 
> > > Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > > > On Die, 2012-09-11 at 14:42 +0200, Paul Menzel wrote: 
> > > > > 
> > > > > using Debian Sid/unstable with the awesome 3.4.13-1 window manager and
> > > > > Evolution 3.4.3-1, htop shows X to constantly use 10 % of the CPU.
> > > > > Closing Evolution the usage goes back to more or less 0 %.
> > > > 
> > > > I'm not seeing this. Is there something in your Evolution window(s) that
> > > > is constantly repainting, e.g. a spinner in the status bar, a blinking
> > > > cursor, ... ?
> > > 
> > > Now that you are mentioning it, in the bottom there is the message
> > > »Checking for New Messages« and next to it there is an animation where
> > > something goes around a circle. Canceling that removes X’s CPU usage.
> > 
> > That's a GTK+ spinner widget, which uses RENDER trapezoids, which is a
> > software rendering fallback with EXA.
> 
> Could that be changed to not us some fallback?

Anything could be done ;), but it would require a lot of work to EXA and
the drivers, which is unlikely to happen at this point. 


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer
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